interface and GUID something

[egsuh]

Hello,

I'm defining interface (of course not interface section, but a descendant of IInterface) without GUID.
But this causes compile problems sometimes -- not always.
It causes "internal error 200611031' at any random place of the unit containing interface.

This disappears if I build? (shift-F9) the project.
Does interface need a GUID definition? If then how can I use it?  I can create a GUID by simply clicking Ctrl-Shift-G.

[cdbc]

Hi
Yes COM interfaces need (operates better) with a GUID, I always assign a GUID to my interfaces COM or CORBA!!! (the corba one can just be its type-name as a string)
The AS & IS operators depend heavily on it.
Just do [Ctrl + Shift + G] every time, saves you the hassle 
Regards Benny

[440bx]

It causes "internal error 200611031' at any random place of the unit containing interface.

You should probably report that as a bug along with example code that causes the internal error.

AFAIK, internal errors are considered compiler bugs.  IOW, something that should never take place.

[cdbc]

Hi
Yeah, @440bx is right, provide some sample code and I'll compile it with trunk and see what happens, bets are, it's already fixed there...
Regards Benny

[egsuh]

Well, if I can replicate it then I'll post the example.

[Thaddy]

That internal error stems from the symsym.pas procedure Tprocsym.deref in the compiler sources.
As far as I can see that can only happen if you mix interface references and class references to the same entity where either one of them has gone out of scope or free'd and it is referenced afterwards: the procdefdereflist is already destroyed but you are trying to use it. (It is always created!)
It should be reported, but we really need an example of how you use your interfaced code to see if the above is indeed the case and if the internal error is still thrown in fixes or trunk.
Note that the code path that throws the internal error also indicates that you made an error in the way you use interfaces. So even if the internal error does not occur, there is still your own error in the code, which may manifest itself as a warning or error, but also as e.g. a memory leak or a double free exception.

[egsuh]

As far as I can see that can only happen if you mix interface references and class references to the same entity where either one of them has gone out of scope or free'd and it is referenced afterwards:

I said the error occurs during compilation.

Anyway I'm trying to create a miniature structure of what I've defined, but cannot post the whole project as is, as there are many units  used.

[Thaddy]

I said the error occurs during compilation.

Of course... That is obvious.

[valdir.marcos]

Hello,

I'm defining interface (of course not interface section, but a descendant of IInterface) without GUID.
But this causes compile problems sometimes -- not always.
It causes "internal error 200611031' at any random place of the unit containing interface.

This disappears if I build? (shift-F9) the project.
Does interface need a GUID definition? If then how can I use it?  I can create a GUID by simply clicking Ctrl-Shift-G.

Solved?

[egsuh]

Solved?

No. This happens when I change something of the code and press Ctrl-F9. Does not happen when I press Shift-F9.
I'm trying to create a small replication, but not successful yet. It is possible that the cause of error may be somewhere else, in my own codes ---- but this is weird because the error occurs at compilation time, not runtime.